Stuck in a rut here. I am trying to do local testing on an inactive system right now. To do this in the shop, I am using the above monitor. I have successfully completed testing on the Harris P7200, and am now working on the APX 4/8000. I have the trunking system and and configurations set, and modified the CAI settings based on moto recommendations. While the simulator allows the APX to 'affiliate', I cannot get the audio out of the monitor and I get a COMM DROP after 2 seconds. Is anyone using the Aeroflex with any motorola subscribers that can assist me?